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Herpangina
Herpangina, also called mouth blisters, is the name of a painful mouth infection caused by coxsackieviruses. Usually, herpangina is produced by one particular strain of coxsackie virus A (and the term "herpangina virus" refers to coxsackievirus A) but it can also be caused by coxsackievirus B or echoviruses. Most cases of herpangina occur in the summer, affecting mostly children. However, it occasionally occurs in adolescents and adults. It was first characterized in 1920.
==Presentation==
Though herpangina can be asymptomatic, symptoms usually associated are high fever and sore throat.
A small number of lesions (usually 2 - 6) form in the back area of the mouth, particularly the soft palate or tonsillar pillars. The lesions progress initially from red macules to vesicles and lastly to ulcerations which can be 2 – 4 mm in size. The lesions heal in 7 – 10 days.
Histologically, the epithelial cells show signs of intracellular and extracellular edema.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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